Photographic camera



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M/. DESCRIPTION oF PICTURE Nov. 1.3, 1934.

W. H. PETIT ETAL Puoroauyulc cAuERA Filed latch 29, 1953 18 Sheets-Sheetl 18 Patented Nov. i3, 1934 UNITED STATES 1,980,546 i Pno'roGnArmc CAMERA William H. Petit and Edson S. Hineline, Rochester, N. Y., assignors to Folmer Grailex Corporation, Rochester, N. Y., a corporation of Dela- Application March 29, 1933, Serial No. 663,326

46 Claims.

This invention relates to photographic cameras, and more particularly to cameras all of the parts of which are arranged very compactly and within a small compass.

In order that the principle ofthe invention may be readily understood, we have disclosed a single embodiment thereof in the accompanying drawings, wherein- Fig. 1 is a front elevation of the camera with 1,0 the top opened up and the viewing hood in functioning position, the lens door being open;

' Fig. 2 is an end elevation ofthe camera. with the parts in the same position as in Fig. 1;

Fig. 3 is a vertical transverse section upon an 1| enlarged scale on the broken line 3-3 of Fig. 1,

certain of the parts being broken away;

Fig. 4 is a top plan view also upon an enlarged scale of Athe camera with the cover open Fig. 5 is a vertical transverse section of the Fig. l0 is a partial end elevation' of the camera casing and showing the film window; l

Fig. 111s a vertical transverse section taken through the camera with the parts in closed position upon the line 11--11 of Fig. 7; Y

Fig. 12 is a detail in cross`section showing the camera lock in released position;

Fig. 13 is a similar view showing the camera.Y

lock in locked position;

Fig. 14 is a horizontal longitudinal section taken through the entire camera but upon an irregular line so` as to show the parts more plainly; V

Fig. 15 is a detail in vertical cross section showing the mirror operating lever, the mirror being shown in the up position in dotted lines;

Fig. 16 is a similar view but showing the mir-` ror in viewing position;

Fig. 17 is'a similar view showing the mirror in its lowermost position, as when the camera is in vfolded position; l'

Fig. 18 is a detail in rear elevation, the'casing being removed, the min-or being in folded position;

Fig. 19 is a detail in verticall section on the .tion shown in Fig. 23;

. line 19-19 of Fig. 4, showing the curtain rollers,

the shutter operating mechanism and iilm measuring mechanism;

Fig. 20 is a detail in vertical section upon an enlarged scale taken through the shutter setting gears shown in xed position;

Fig. 21 is a similar view but showing the knob for the shutter setting gears inreleased position;

Fig. 22 is a top view,with the cover removed, of the shutteroperating parts, the shutter being in fully wound position;

Fig. 23 is a detail of the movable curtain gear and cam showing the relationship of the parts;

Fig. 24 is a vertical cross section of the construc- Fig. 25 is a view similar to Fig. 23 of the fixed curtain gear and cam;

Fig. 26 is a vertical section thereof;

' Fig. 27 is aplan view of the shutter operating mechanism in partly wound condition;

Fig. 28 is a similar view but with the parts in curtain open position;

Fig. 29 is a plan view of one end of the camera, but looking through the cover and showing the shutter operating mechanism and the film feed mechanism;

Fig. 30 is a view similar to Fig. 29, the cover beingy removed and the partsbeing in a diierent position from that of Fig. 29;

Fig. 31 is a, vertical transverse section upon an enlarged scale to show the mirror operating lever 142 and the shutter release pin '166 in `instantaneous position, the view being taken upon theirregular dotted line 31--31 of Fig. 29;

Fig. 31ais a. view of the shutter release pin 90 in bulb position;

Fig. 32l is atop view of the shutter` winding knob with an index plate, the setting being at position No. 1;

Fig. 32a is a similar view with the index plate removed to. show the relation of parts;

Fig. 33 is a similariview showing the parts. with the index plate and the stop plate removed;

Fig. 34 is a similar view but with a diierent setting.; y

Fig. 35 is a plan view of thenotched plate governing the shutter setting;

Fig. 36 is a similar view of adjacent cooperating parts, the shutter operating knobjbeing removed, to indicate the' relative position of the F15. 38.15 a rear elevation of the camera with -which is indicated at 2 in the same figures. casing member 1 comprises the bottom 3, the two the case removed showing the position of the curtain setting when the curtain operating knob is at position No'. 2 indicated in Fig. 38a;

- Fig. 38a is a detail to indicate one position of the curtain operating knob;

Fig. 39 is a view similar to Fig. 38 when the curtain operating knob is set at position No. 9, as in Fig. 39a;

Fig-39a is a view similar to Fig. 38a 'showing the curtain operating knob at position No. 9;

Fig. is a bottom plan view of the camera with the case removed;

Fig. 41 is a detail in cross section of the lens mounting in part;

Fig. 42 is a top elevation or plan view of the lens mounting;

Fig. 43 is a plan view of the iixed curtain;

Fig. 44 is a similar view of the movable curtain;

Fig. is a detail showing the lens lock open ring or sliding member;

Fig. 46 is a plan view of the shutter speed chart; l Fig. 46a is a vertical section upon the line 46a 0f Fig. 46; i

Figs. 47 and 48 are plan views of the two members of the shutterI speed chart, and

Fig. 49 is a perspective view showing the two part casing, the parts being separated from each other.

This invention, relating as it does to photographic cameras of a very compact type, is intended to render as simpleas possible v,the art of picture-making while providing means to obtain a correct exposure. To effect this result a number of different factors enter into the problem and in order to solve the problem correctly, it has been necessary to co-relate the various elements or factors of the camera in such a manner that whle preserving all the efficiency of a camera of large bulk and considerable weight,

' the camera has been reduced to a relatively small novel features of the in'vention will be evident from the' detailed description ofthe parts as shown in the drawings. We will specifically describe the preferred embodiment of the inven-v.

tion without, however, limiting the invention ex'- cepting as set forth in the claims.

Referring more particularly to the drawings, the camera Vcasing is made up of two main members, the iirstof which is indicated generally at 1 in Figs. 5, 11 and elsewhere, and the other of The ends 4, 5, and the end portions of the front, most clearly indicated at 6` and 7 in Figs. 7 and 8. To the end member 5 is secured the strap handle 8. The member 2 comprises al1 the remainder of .the casing and to it are attached all the parts, ofthe camera. To said member 2 is hinged the cover 9, as indicated at 10 in Figs. 5 and 11.

Saidcasing member 2 also includes the front .wall 11 of the camera between the inwardly extending ends 6, '7 of the member 1 of the casng.

. Said front wall-is'most clearly shown in Figs. 5,

'7 and 11. In'order to permit the ready separation of the two' members 1.and`2 of the casing,

-fthere are provided at the bottom 3 twolocking studs or buttons 12, 12, one of which is shown `in unlocked position in Fig. 12A and in locked position in Fig. 13. The said studs or buttons 12 are adapted to be slid in lengthwise slots 13v in the bottom 3 so as to permit them to engage or disengage the edges of slots 13, 13, in the metal bottom 14 of the member 2 of the casing as is clearly shown in Fig. 40, which figure is, as previously stated, a bottom plan view of the member 2 of the casing after the member 1 has been separated therefrom. Said bottom member 14 is prov lded with an opening 15 for a tripod and hingedly secured at 16, 17 are two thin metal plates 18, 19 with holes to receive the ends of the spools for the iilm.

An important feature of the invention resides in the mounting of the lens structure upon the door that is pivoted in the casing member 2 and forms a part of the front wall of the member 2 when the camera is in an entirely closed position. The structure and arrangement are suchthat when the door carrying the lens is swung inward it engages the mirror structure or mounting so as to swing it from its focusing position at a forty-five degree angle into a; vertical. position and at the same time to swing downwardly the member that holds said mirror at its said forty-five degree focusing position. This exceedingly compact' arrangementr (which we will next describe) is such as to permit the assembling of all necessary parts lin ya. small compass while retaining all the advantages of the much larger Graex camera: We will now' describe the details of construction of the lens mounting and the mirror mounting and their cooperation in opening and closing the camera.

Referring particularly to Figs. 3, 5, 11, 41 and 42, it will be understood that in the front wall 11 of the casing member 2, there lis provided the door 20 hinged at 21. Said door 20 in reality consists of two main parts at right angles to each other, the main part 20 constituting the door and the right angled part 22 rigid with the part 20 constituting the support for the lens mounting and constituting also the means for swinging the mirror from inclined to vertical position.

Referring rst to the details of the lens mounting, the plate or part 22 receives the threaded ring 23. The parts of the lens structure Amay 'be and desirably are of usual construction and it is unnecessary to describeit in great detail. It is sumcient to state that the ring 2,3 has threaded thereinto the inner ring or barrel member 24 within which is positioned the lens barrel 25. 'Ihe two rear lenses are indicated at 26 and 27. They are positioned within the lens barrel 25 and held in position by the ring 28 threaded .into the lens barrel 25. In advance or to the left of the ring 23 there is a barrel or ring-like member 29 and the diaphragm ring 30, and in advance thereof are the front lenses 31, 32 suitably supported in the lens barrels 33, 33. The door 2O is provided with two ,brackets 34, shown most clearly in Figs. 1 and 11. They are provided with inwardly extending pins to engage the front lens barrel. mounting so as to hold said mounting from rotative movement when the lens barrel is 

